USSPs “Unmanned Semi-fixed Sea Platforms for Maritime Surveillance” project will improve Maritime Surveillance by developing the backbone of an advance C5ISTAR federated system of systems exploiting unmanned semi-fixed platforms at sea. USSPs will integrate legacy assets and systems with innovative solutions, aiming to improve maritime surveillance capabilities, reduce high value asset utilization and mission related costs, and provide cross-domain persistent and permanent maritime situational awareness. It will develop an unmanned highly autonomous energy efficient and miniaturized oil rig technology-based platform capable to integrate a wide range of air, surface, and underwater sensors. These platforms will enable deployment in any geographical regions, and operation under adverse environmental conditions.